Pen



FIG. 1 is a lower front right perspective view of a pen showing my new design.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof, with the left side elevation view being a minor image of the right side elevation view;

FIG. 5 is an enlarged top plan view thereof;

FIG. 6 is an enlarged bottom plan view thereof;

FIG. 7 is a lower front right perspective view of the cap of the pen shown in FIG. 1, shown without the pen body for convenience of illustration;

FIG. 8 is a front elevation view thereof;

FIG. 9 is a rear elevation view thereof;

FIG. 10 is a right side elevation view thereof, with the left side elevation view being a mirror image of the right side elevation view;

FIG. 11 is an enlarged top plan view thereof; and,

FIG. 12 is an enlarged bottom plan view thereof.

The broken lines shown in FIGS. 5, 6, 11, and 12 illustrate environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a pen, as shown and described. 